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episode icon 「社会とつながる情報学」平成19年度市民講座
佐藤一郎「ICタグとネット社会」
SuicaやPASMOなどの電子定期券の仕組みを知っていますか。電子定期券には電池は入っていませんが、自... more
Aug 2 2007 59m
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